The International Bottled Water Association says that Americans on the average drink 4.6 (8-oz.) servings of water a day. Assume that the number of 8-oz. servings of water is approximately normally distributed with a standard deviation of 1.4 servings. (Give your answers correct to four decimal places.)
(b) What proportion of Americans drink less than half the recommended 8 servings?

I worked it and got a different answer for the graph number 0.9893 and tom worked and got something totally different, what are we doing wrong, trying to work together on some of these?

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